Remove some widgets from your sidebar. You have added too much widgets in the sidebar.

Also remove some widgets from the footer, your footer looks non-professional and awkward

Your template looks good but don’t forget to make the above changes. You asked for its responsiveness, i just check and I noticed that its not completely responsive. I tested it in several devices and I found several errors in its responsiveness.

Hi,
I have visited your blog. It’s good. But, your blog footer is too large and looking very bad. You have to decrease your blog footer size. Another thing is you are showing only one line of description with your latest posts. So you must show 3 to 5 lines of description, then It will look good. Also increase the total no of latest post on the homepage if possible. The rest is good.

Stuctured Data
I cheaked your blog for structured data via Google Testing Tool and found that you have no Highlighted Data or Rich Snippets on your blog. You must work on it to enhance your search appearence. Get help from google for promoting your content with Structured Data Markup

Below is the screenshot of the result of Google Structured Data Testing Tool:

I’m using this widget on my blog, you can see it in the bottom right corner.

Here’s the guide about adding this widget to your blog.

Go to Blogger >> Template >> Edit HTML >> Click anywhere in the HTML template editor and press (CTRL+F), this will enable a search box. Now search for ]]>< /b:skin> tag and just above it paste the following CSS style sheet coding.

Now with the help of search box, look for the starting < /body> tag and just above it paste the following coding which consists of a contact us widget and JavaScript that will make the contact us widget floating across your site.